Virginia's Declaration of Rights was drawn upon by Thomas Jefferson for the opening paragraphs of the Declaration of Independence. It was widely copied by the other colonies and became the basis of the Bill of Rights.
The ridges found in flexible metal duct create turbulence and will diminish airflow. NEVER use 4 dryer duct or any plastic duct on a range hood installation. The minimum size duct allowed on most range hoods is 3 Â¼ by 10 which is equivalent to 6 round. More powerful hoods require even larger duct sizes up to 10 round. Consult the specifications for the model you have chosen.
Slip the hood off the supporting screws and set it aside, then remove the screws. 2. Check to make sure the new hood will be 24 to 30 inches above the surface of the range and will cover at least the entire cooking area. A 3-inch overhang on all sides is preferable. Be sure the wiring that will connect to the hood protrudes at least 12 inches from the wall. 3. Observe the direction of the venting.